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Número de pieza
componentes Descripción
MC33794 Ver la hoja de datos (PDF) - Freescale Semiconductor
Número de pieza
componentes Descripción
Fabricante
MC33794
Electric Field Imaging Device
Freescale Semiconductor
MC33794 Datasheet PDF : 18 Pages
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INTERNAL BLOCK DIAGRAM
A,B,C,D
TEST
2.8 k
Ω
E1 – E9
REF_A*, REF_B*
2.8 k
Ω
* REF_A and REF_B are
not switched to ground
when not selected.
V
DD
V
CC
RST
WD_IN
V
PWR
AGND
GND and HEAT SINK
PWR_MON
V
DD
_
MON
LAMP_GND
LAMP_CTRL
ISO_OUT
ISO_IN
4
CONTROL
LOGIC
MUX
OUT
MUX
IN
POR/
WD
V
CC
REG
V
DD
REG
22 k
Ω
(Nominal)
OSC
150
Ω
300
Ω
CLK
R_OSC
39 k
Ω
SHIELD_EN
SHIELD
RECT
LPF
GAIN AND
OFFSET
LP_CAP
10 nF
ATTN
LEVEL
SIGNAL
LAMP_SENSE
LAMP_MON
LAMP CKT
ISO-9141
LAMP_OUT
ISO-9141
(Note: All Resistor Values are Nominal)
Figure 1. Simplified Functional Block Diagram
MC33794
2
Sensors
Freescale Semiconductor
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